278 Answered Questions for the topic Trigonometric Functions

Trigonometric Functions Trigonometry

07/12/17

#### Let f(x) = 2 sin (3x-pie/4) find the value of the phase shift

Let f(x) = 2 sin (3x-pie/4) find the value of the phase shift

06/01/17

#### Find the lengths of the diagonals of the rhombus without using the law of sines or law of cosines?

Quadrilateral ABCD is a rhombus with side of lengths 8cm. The measure of one angle of the rhombus is 157 degrees.
Find the lengths of the diagonals of the rhombus without using the law of...
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05/30/17

#### Which set of lengths will form a triangle with the greater area?

Using trigonometric methods (law of cosine/sine) or cosine/sine/tangent, determine which set of lengths will form a triangle with the greater area? Show work for both sets.
Set #1) 8 feet, 7...
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Trigonometric Functions

05/24/17

#### given tangent = <0 and secant = -5sqrt/2 what is the sine

need to find the six trigonometric functions given that Tan <0 and sec is the -sqrt of 5 over 2

05/22/17

#### Where does a cosine graph with an "a" value =/= 1 start?

The function for a cosine graph is f(x)=a cos b (x-c) + d, and in the parent function of f(x)=cos x, the "a" value = 1. I was taught that in a cosine function the graph "starts" at (0, 1). Is this...
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Trigonometric Functions

05/12/17

#### write cos(5x) Cos (3x) as a sum of trigonometric functions

write cos5xcos3x as a sum of trigonometric functions

Trigonometric Functions

05/08/17

#### In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric

In the problem, t is a real number and P = (x, y) is thepoint on the unit circle that corresponds to t. Find the exactvalue of the indicated trigonometric function of t.
(-√65/9, -4/9) Find cot...
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#### Trigonometric Functions

Identify the amplitude, period, phase shift and vertical shift (mean value over one period) of: f(x)=−5cos(4πx−12π)+3
(π is pi)

04/28/17

#### Need help solving this math problem with trigonometric functions :)

Suppose the terminal point determine by t lies in the second quadrant and is (-24/25, y).
(a) Find y.
(b) Find the value of the 6 trigonometric functions at 837π + t
I believe the...
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Trigonometric Functions

04/27/17

#### 4cos(2x-pi)=0 for -pi =< x =< pi

Solve to find the x intercepts of the function

Trigonometric Functions

04/26/17

#### Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature of 96 degrees occurs at 3 PM and the average tempe

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature of 96 degrees occurs at 3 PM and the average temperature for the day is 80 degrees....
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#### Advanced trig problem I'm having an issue with.

Ok so on a math work sheet we had a problem where there was two side lengths of a triangle, 63 and 91. The third side was only described as being traveled across by a plane with an average of...
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Trigonometric Functions

04/12/17

#### tan(theta + 30 degrees) =-6

Find all solutions in the interval [ 0,2pie]

04/11/17

#### 7sin^2 theta - 9 cos2 theta = 0

Find the solutions for the equation 7sin^2 theta - 9 cos2 theta = 0 for 0 < or equal to theta < 360 degree.

Trigonometric Functions Geometric Series

04/06/17

#### how is cos24 = .424

it says thats the answer i dont know how that is possible because cos24 = .9135... if thats the case what is cos28?

03/26/17

#### Please help me with trigonometry, my teacher is no help and I don't understand. I'm not looking only for answers, need to learn how to do it

A survey team was to measure the distance across a river over which a bridge is to be built. They set up a survey post on their side of the river directly across from a large tree on the other...
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03/15/17

#### Bearing problems & Airplane problems

A woman looks at a plane flying directly at her at a constant height and a speed. The plane is traveling 400mph. She first sees the plane at an angle of elevation of 6 degrees with the horizontal....
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03/12/17

#### Advanced Functions

the ferris wheel at an amusement park measures 16m in diameter. the wheel does 3 rotations every minute. the bottom of the wheel is 1m above the ground
is this the write equation for...
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03/12/17

#### Advanced Functions Help

the ferris wheel at an amusement park measures 16m in diameter. the wheel does 3 rotations every minute. the bottom of the wheel is 1m above the ground... a) determine the simplest equation that...
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03/10/17

#### Function word problem please HELP

The Celestial Bakery currently sells an average of 750 wedding cakes per month and charges an average of $200 per cake. Market research indicates that for every $5 increase in the price of a cake,...
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Trigonometric Functions Solve Equation

02/28/17

#### Solve sin (2x)

Solve: sin(2x) = √2 cos x
0 ≤ x ≤ π
Thank you for your help!

Trigonometric Functions

02/28/17

#### Trigonometry f(x)

let f(x) = sin3x + cos3x (tan x)
Let sin x = 2/3
Show that f(2x) = - (4√5) ÷ 9
Thank you for your time!

02/12/17

#### Describe a real-world phenomenon that can be modeled by one of these two trigonometric functions.

The sine and cosine functions are used to model periodic behavior. find an internet resource that discusses the periodic behavior.

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